二氟代氙

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:25.01; pressure:0.00; stir:

反应条件: temp:25.01; pressure:0.00; stir:

反应条件: temp:25.01; pressure:0.00; stir:

反应条件: temp:25.01; pressure:0.00; stir:

反应条件: temp:25.01; pressure:0.00; stir:

反应条件: temp:25.01; pressure:0.00; stir:

反应条件: temp:25.01; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A solution of N-(3,5-dichloropyrid-4-yl)-3-cyclopentyloxy-4-(methylthio)benzamide (1 g; that is prepared as described in Example 20) in dichloromethane (100 mL), containing molecular sieve 4A, under nitrogen, is treated with 2,6-di-tert-butyl-4-methylpyridine (1.28 g). The resulting mixture is stirred at room temperature for 1.5 hours, and then it is cooled to 0° C. (in an ice/salt bath) and treated with xenon difluoride (0.51 g) in one portion. After stirring for a further 2 hours in the cold, the mixture is filtered, and the filtrate is washed with saturated aqueous ammonium chloride solution. The organic phase is dried over sodium sulfate and evaporated. The resulting residue is subjected to flash chromatography, eluting with a mixture of ethyl acetate and pentane (2:3 v/v), to give impure N-(3,5-dichloropyrid-4-yl)-3-cyclopentyloxy-4-(fluoromethylthio)-benzamide (600 mg). It is further purified by reversed phase HPLC on octadecylsilyl silica gel, eluting with a mixture of methanol and water (7:3 v/v), to give N-(3,5-dichloropyrid-4-yl)-3-cyclopentyloxy-4-(fluoromethylthio)benzamide (519 mg), in the form of a white solid, m.p. 111°-113° C. [Elemental analysis: C,51.50; H,4.12; N,6.74%; calculated: C,52.05; H,4.12; N,6.74%]. that is prepared it is cooled to 0° C. (in an ice/salt bath) After stirring for a further 2 hours in the cold, the mixture is filtered the filtrate is washed with saturated aqueous ammonium chloride solution The organic phase is dried over sodium sulfate evaporated eluting with a mixture of ethyl acetate and pentane (2:3 v/v)

反应条件: temp:0.00; pressure:0.00; stir: